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ringpop-go v0.4.0 Release Notes

    • 🔋 Feature: Faulty nodes are now automatically reaped from nodes' membership lists after (24 hours by default). #123
    • 🆕 New options for controlling suspect and reaping times. #123
    • ➕ Add new Ready and Destroyed events to ringpop. #125
    • ➕ Add additional logging to bring ringpop-go on par with ringpop-node log messages. #116
    • 🛠 Fix bug where Ringpop automatically added itself to the bootstrap hosts for host-based bootstrapping, but not other bootstrapping methods. #120
    • 🛠 Fix race condition where membership and hashring could be inconsistent with each other. #112
    • ✂ Remove File and Host options from bootstrap options in favor of DiscoverProvider interface. #120
    • ➕ Add Go 1.6 to testing on CI

    🚀 Release notes

    🔖 Version incompatibility in protocol

    Since 0.4.0 introduces a new node/member state, 0.4.0 is not backwards-compatible with previous versions.

    ⬆️ Note rolling upgrades with older versions do work, but undefined behaviour will occur if two versions run in parallel for longer than the FaultyPeriod (default 24 hours).

    🔄 Changes to Bootstrap

    🚀 This release contains a breaking change to the options provided to the ringpop.Bootstrap call.

    BootstrapOptions.File and BootstrapOptions.Hosts have been replaced with BootstrapOptions.DiscoverProvider. DiscoverProvider is an interface which requires a single method:

    type DiscoverProvider interface {
    Hosts() ([]string, error)
}

    Ringpop comes with DiscoverProviders for the previous File and Hosts options out of the box.

    ⬆️ To upgrade if you were previously using File:

    +       "github.com/uber/ringpop-go/discovery/jsonfile"
...
-       bootstrapOpts.File = *hostfile
+       bootstrapOpts.DiscoverProvider = jsonfile.New(*hostfile)

    For static Hosts:

    +       "github.com/uber/ringpop-go/discovery/statichosts"
...
-       bootstrapOpts.Hosts = []string{"127.0.0.1:3000", "127.0.0.1:3001"}
+       bootstrapOpts.DiscoverProvider = statichosts.New("127.0.0.1:3000", "127.0.0.1:3001")